Steve had gone to Wakanda to prepare for the fight. The second he saw Bucky was ok, the fact that he was smiling made Steve's heart happy. The last time Steve had seen him this happy without bruises or cuts on his face was when Bucky punched the guy in the face behind the movie theatre.

"Stevie, come with me," Bucky whispered in his ear as they hugged. Bucky grabbed the blondes hand and pulled him away from the group. Natasha, Bruce and Rhodey looked in confusion as he was pulled by the ex-assassin into the giant building stood behind them.

After a while of walking they passed vision and Shuri. Shuri smirked at him childishly seeing that Steve was walking alone with him. Bucky always talks about Steve to her.

Bucky pulls Steve into an empty room and pushes him against the wall.

"If this is the end of the world, I want to spend my last moments with you right." Before Steve could answer, Bucky pushed his lips up against his. Steve returned the kiss more passionate then ever before. He tried to pull Bucky closer despite the fact it was physically impossible.

Steve pulled away and starting trailing kisses down his neck, leaving burning sensations tingling on Bucky's skin. They turned so now Bucky was pushed against the wall.

"Stevie, I love you," Bucky whimpered.

Steve pulled away from Bucky's neck. He looked at Bucky's round blue eyes. He smiled softly. Steve slowly lifted his hand and placed it on Bucky's cheek.

"James Buchanan Barnes. I love you, I never stopped loving you and I never will."

Bucky's had moved up and grabbed Steve's hand that was resting on his cheek. The brunette leant forwards and softly pecked Steve's lips.

Wanda walked in with an embarrassed look on her face.

"I um, knocked and no one answered so I just came in, uh, T'Challa wants you guys down with the rest of the soldiers." Her eyes slowly moved to the love kisses on Bucky's neck.

"Yeah we'll be right down, just give us a sec," Steve said as him and Bucky slowly moved from their embrace.

Wanda walked out not knowing what she had seen.

"Stevie, if anything happens to me, just know, never shave that beard."

Steve chuckled. He grabbed the winter soldiers hand and they walked out of the empty room.

*wakanda fight happens*

*Thanos snaps his fingers, we know the drill*

"Steve?"

The blonde looks to his right to see the love of his life turning to dust. Before he can react he disappears. Only ashes left on the floor where he stood.

"Bucky, no no no, Bucky!" SteVe starts yelling. Thor watches as Steve screams in fear and hurt.

"Captain..." Thor starts quickly being cut off.

"Thor, he's gone, he's gone again!"

Steve collapses on the floor, his arms wrapped around his stomach. Tears start profusely rolling down his cheeks. The love of his life, gone again. His memories start rushing through his brain. Every stolen moment they had hidden behind a bar or in a hotel room they had rented. Every moment he had spent with Bucky moving at 100 miles per hour through his head.

Thor walked slowly over to him and sat next to the blonde.

"Steve," he started, "we're going to get him back. No matter what."

Steve turned to Thor, his eyes bloodshot from tears, his face covered in blood, sweat and tears. Thor pulled him into a hug.

"I promise," Thor whispered, "we will get him back."

That moment up in the empty room, truly was, One Last Moment.